METHOD OF MINING SALT DEPOSITS IN OPEN CHAMBERS OF UNDERGROUND SALT MINES,申请号PL19870266958-传众专利搜索

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发明名称	METHOD OF MINING SALT DEPOSITS IN OPEN CHAMBERS OF UNDERGROUND SALT MINES
摘要
申请公布号	PL266958(A1)	申请公布日期	1989.01.23
申请号	PL19870266958	申请日期	1987.07.20
申请人		发明人
分类号	E21B;E21B43/28;(IPC1-7):E21B/	主分类号	E21B
代理机构		代理人
主权项
地址

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